I got a refund (GC) today for my order containing ego batteries that never made it out of Hong Kong. Just past 60 days since the order was placed. There were some back and forth communications on the final details that went rather quickly and painlessly.
I got the tanks and egos I wanted from a US vendor in a black Friday sale, so I'm not sure what to use the refund on.
Saw your post about the kayfuns, get a 3.1 clone + spare parts with the refund